diff --git a/lib/pages/chat/events/message.dart b/lib/pages/chat/events/message.dart
index 7dca1c4..7dd3d65 100644
--- a/lib/pages/chat/events/message.dart
+++ b/lib/pages/chat/events/message.dart
@@ -668,6 +668,7 @@ class Message extends StatelessWidget {
                                               timeline: timeline,
                                               selected: selected,
                                               bigEmojis: bigEmojis,
+                                              fullWidthCard: card,
                                             ),
                                           ],
                                         ),
diff --git a/lib/pages/chat/events/message_content.dart b/lib/pages/chat/events/message_content.dart
index 3a6c58c..3eb2ef2 100644
--- a/lib/pages/chat/events/message_content.dart
+++ b/lib/pages/chat/events/message_content.dart
@@ -33,6 +33,7 @@ class MessageContent extends StatelessWidget {
   final Timeline timeline;
   final bool selected;
   final Set<String> bigEmojis;
+  final bool fullWidthCard;
 
   const MessageContent(
     this.event, {
@@ -44,6 +45,7 @@ class MessageContent extends StatelessWidget {
     required this.borderRadius,
     required this.selected,
     required this.bigEmojis,
+    this.fullWidthCard = false,
   });
 
   @override
@@ -67,13 +69,40 @@ class MessageContent extends StatelessWidget {
             final h = event.content
                 .tryGetMap<String, Object?>('info')
                 ?.tryGet<int>('h');
-            var width = maxSize;
+            var width = fullWidthCard && event.messageType == MessageTypes.Image
+                ? double.infinity
+                : maxSize;
             var height = maxSize;
             var fit = event.messageType == MessageTypes.Sticker
                 ? BoxFit.contain
                 : BoxFit.cover;
             if (w != null && h != null) {
               fit = BoxFit.contain;
+              if (fullWidthCard &&
+                  event.messageType == MessageTypes.Image &&
+                  w > 0 &&
+                  h > 0) {
+                return AspectRatio(
+                  aspectRatio: w / h,
+                  child: ImageBubble(
+                    event,
+                    width: double.infinity,
+                    height: double.infinity,
+                    fit: BoxFit.cover,
+                    borderRadius: borderRadius,
+                    timeline: timeline,
+                    textColor: textColor,
+                    onTap: () => showDialog(
+                      context: context,
+                      builder: (_) => ImageViewer(
+                        event,
+                        timeline: timeline,
+                        outerContext: context,
+                      ),
+                    ),
+                  ),
+                );
+              }
               if (w > h) {
                 width = maxSize;
                 height = max(32, maxSize * (h / w));
@@ -124,6 +153,7 @@ class MessageContent extends StatelessWidget {
               textColor: textColor,
               linkColor: linkColor,
               timeline: timeline,
+              expand: fullWidthCard,
             );
           case MessageTypes.File:
             return MessageDownloadContent(
diff --git a/lib/pages/chat/events/video_player.dart b/lib/pages/chat/events/video_player.dart
index 51985dd..0f9f048 100644
--- a/lib/pages/chat/events/video_player.dart
+++ b/lib/pages/chat/events/video_player.dart
@@ -24,12 +24,14 @@ class EventVideoPlayer extends StatelessWidget {
   final Timeline? timeline;
   final Color? textColor;
   final Color? linkColor;
+  final bool expand;
 
   const EventVideoPlayer(
     this.event, {
     this.timeline,
     this.textColor,
     this.linkColor,
+    this.expand = false,
     super.key,
   });
 
@@ -49,16 +51,74 @@ class EventVideoPlayer extends StatelessWidget {
     final infoMap = event.content.tryGetMap<String, Object?>('info');
     final videoWidth = infoMap?.tryGet<int>('w') ?? maxDimension;
     final videoHeight = infoMap?.tryGet<int>('h') ?? maxDimension;
+    final hasDimensions = videoWidth > 0 && videoHeight > 0;
 
     final modifier = max(videoWidth, videoHeight) / maxDimension;
-    final width = videoWidth / modifier;
-    final height = videoHeight / modifier;
+    final width = expand ? double.infinity : videoWidth / modifier;
+    final height = expand
+        ? (hasDimensions ? double.infinity : maxDimension)
+        : videoHeight / modifier;
 
     final durationInt = infoMap?.tryGet<int>('duration');
     final duration = durationInt == null
         ? null
         : Duration(milliseconds: durationInt);
 
+    final player = SizedBox(
+      width: width,
+      height: height,
+      child: Hero(
+        tag: event.eventId,
+        child: Stack(
+          children: [
+            if (event.hasThumbnail &&
+                AppSettings.showThumbnailsInTimeline.value)
+              MxcImage(
+                event: event,
+                cacheKey: event.transactionId ?? event.eventId,
+                cacheName: event.room.id,
+                isThumbnail: true,
+                width: width,
+                height: height,
+                fit: BoxFit.cover,
+                placeholder: (context) => BlurHash(
+                  blurhash: blurHash,
+                  width: width,
+                  height: height,
+                  fit: BoxFit.cover,
+                ),
+              )
+            else
+              BlurHash(
+                blurhash: blurHash,
+                width: width,
+                height: height,
+                fit: BoxFit.cover,
+              ),
+            Center(
+              child: CircleAvatar(
+                child: supportsVideoPlayer
+                    ? const Icon(Icons.play_arrow_outlined)
+                    : const Icon(Icons.file_download_outlined),
+              ),
+            ),
+            if (duration != null)
+              Positioned(
+                bottom: 8,
+                left: 16,
+                child: Text(
+                  '${duration.inMinutes.toString().padLeft(2, '0')}:${(duration.inSeconds % 60).toString().padLeft(2, '0')}',
+                  style: TextStyle(
+                    color: Colors.white,
+                    backgroundColor: Colors.black.withAlpha(32),
+                  ),
+                ),
+              ),
+          ],
+        ),
+      ),
+    );
+
     return Column(
       mainAxisSize: .min,
       spacing: 8,
@@ -78,60 +138,12 @@ class EventVideoPlayer extends StatelessWidget {
                   )
                 : event.saveFile(context),
             borderRadius: BorderRadius.circular(AppConfig.borderRadius),
-            child: SizedBox(
-              width: width,
-              height: height,
-              child: Hero(
-                tag: event.eventId,
-                child: Stack(
-                  children: [
-                    if (event.hasThumbnail &&
-                        AppSettings.showThumbnailsInTimeline.value)
-                      MxcImage(
-                        event: event,
-                        cacheKey: event.transactionId ?? event.eventId,
-                        cacheName: event.room.id,
-                        isThumbnail: true,
-                        width: width,
-                        height: height,
-                        fit: BoxFit.cover,
-                        placeholder: (context) => BlurHash(
-                          blurhash: blurHash,
-                          width: width,
-                          height: height,
-                          fit: BoxFit.cover,
-                        ),
-                      )
-                    else
-                      BlurHash(
-                        blurhash: blurHash,
-                        width: width,
-                        height: height,
-                        fit: BoxFit.cover,
-                      ),
-                    Center(
-                      child: CircleAvatar(
-                        child: supportsVideoPlayer
-                            ? const Icon(Icons.play_arrow_outlined)
-                            : const Icon(Icons.file_download_outlined),
-                      ),
-                    ),
-                    if (duration != null)
-                      Positioned(
-                        bottom: 8,
-                        left: 16,
-                        child: Text(
-                          '${duration.inMinutes.toString().padLeft(2, '0')}:${(duration.inSeconds % 60).toString().padLeft(2, '0')}',
-                          style: TextStyle(
-                            color: Colors.white,
-                            backgroundColor: Colors.black.withAlpha(32),
-                          ),
-                        ),
-                      ),
-                  ],
-                ),
-              ),
-            ),
+            child: expand && hasDimensions
+                ? AspectRatio(
+                    aspectRatio: videoWidth / videoHeight,
+                    child: player,
+                  )
+                : player,
           ),
         ),
         if (fileDescription != null && textColor != null && linkColor != null)
diff --git a/lib/pages/chat_list/chat_list.dart b/lib/pages/chat_list/chat_list.dart
index 8bd5305..a254633 100644
--- a/lib/pages/chat_list/chat_list.dart
+++ b/lib/pages/chat_list/chat_list.dart
@@ -413,8 +413,9 @@ class ChatListController extends State<ChatList>
 
     scrollController.addListener(_onScroll);
     _waitForFirstSync();
-    _backfillSubscription =
-        _clientStream.stream.listen((_) => backfillRoomTypeMarkers());
+    _backfillSubscription = _clientStream.stream.listen(
+      (_) => backfillRoomTypeMarkers(),
+    );
     if (PlatformInfos.isMobile) {
       _callEventSubscription = FlutterCallkitIncoming.onEvent.listen(
         _onCallEvent,
@@ -910,30 +911,7 @@ class ChatListController extends State<ChatList>
   bool waitForFirstSync = false;
 
   /// Leaves the room locally and removes it from the local database.
-  Future<void> leaveRoom(Room room) async {
-    try {
-      await room.leave();
-    } on MatrixException catch (e, s) {
-      // If the room was already left on the server (e.g. a stale local copy
-      // reappeared after a restart) the leave request fails, but the user
-      // intent (room not being listed anymore) is already fulfilled. Clean up
-      // locally instead of showing an error.
-      if (!{
-        MatrixError.M_FORBIDDEN,
-        MatrixError.M_NOT_FOUND,
-        MatrixError.M_UNKNOWN,
-      }.contains(e.error)) {
-        Logs().w('Failed to leave room ${room.id}', e, s);
-        rethrow;
-      }
-      Logs().w('Room ${room.id} is already gone, cleaning up locally...', e, s);
-    }
-    final client = room.client;
-    // Make sure the room does not reappear from the local database after an
-    // app restart, even if the leave sync did not run in time.
-    await client.database.forgetRoom(room.id);
-    client.rooms.remove(room);
-  }
+  Future<void> leaveRoom(Room room) => safeLeave(room);
 
   /// Loads the shared [roomTypeStateEvent] marker from the synced room state
   /// (from the local database for partially loaded rooms) and writes it for
diff --git a/lib/pages/chat_list/space_view.dart b/lib/pages/chat_list/space_view.dart
index 167b30e..3e5ebce 100644
--- a/lib/pages/chat_list/space_view.dart
+++ b/lib/pages/chat_list/space_view.dart
@@ -13,6 +13,7 @@ import 'package:tatchat/pages/chat_list/active_call_indicator.dart';
 import 'package:tatchat/pages/chat_list/unread_bubble.dart';
 import 'package:tatchat/utils/localized_exception_extension.dart';
 import 'package:tatchat/utils/matrix_live_kit_calls/matrix_live_kit_call.dart';
+import 'package:tatchat/utils/matrix_sdk_extensions/room_extension.dart';
 import 'package:tatchat/utils/stream_extension.dart';
 import 'package:tatchat/utils/string_color.dart';
 import 'package:tatchat/widgets/adaptive_dialogs/show_ok_cancel_alert_dialog.dart';
@@ -198,7 +199,11 @@ class _SpaceViewState extends State<SpaceView> {
 
         final success = await showFutureLoadingDialog(
           context: context,
-          future: () async => await space?.leave(),
+          future: () async {
+            final room = space;
+            if (room == null) return;
+            await safeLeave(room);
+          },
         );
         if (!mounted) return;
         if (success.error != null) return;
@@ -361,7 +366,7 @@ class _SpaceViewState extends State<SpaceView> {
       case SpaceChildAction.leave:
         await showFutureLoadingDialog(
           context: context,
-          future: () => room!.leave(),
+          future: () => safeLeave(room!),
         );
     }
   }
diff --git a/lib/pages/mural/mural_chat_page.dart b/lib/pages/mural/mural_chat_page.dart
index d71b22d..8ebe257 100644
--- a/lib/pages/mural/mural_chat_page.dart
+++ b/lib/pages/mural/mural_chat_page.dart
@@ -85,19 +85,53 @@ class _MuralChatViewState extends State<MuralChatView> {
             .toList();
 
   bool _descriptionExpanded = false;
+  bool _loadingHistory = false;
+  bool _historyEnded = false;
+  final ScrollController _scrollController = ScrollController();
 
   @override
   void initState() {
     super.initState();
     _getTimeline();
+    _scrollController.addListener(_onScroll);
   }
 
   @override
   void dispose() {
+    _scrollController.dispose();
     timeline?.cancelSubscriptions();
     super.dispose();
   }
 
+  void _onScroll() {
+    if (_historyEnded) return;
+    if (_scrollController.position.pixels >=
+        _scrollController.position.maxScrollExtent - 200) {
+      _loadMore();
+    }
+  }
+
+  Future<void> _loadMore() async {
+    final timeline = this.timeline;
+    if (timeline == null || _loadingHistory || timeline.isRequestingHistory) {
+      return;
+    }
+    _loadingHistory = true;
+    setState(() {});
+    final eventCountBefore = timeline.events.length;
+    try {
+      await timeline.requestHistory();
+    } catch (e, s) {
+      Logs().w('Failed to load more mural posts', e, s);
+    } finally {
+      if (timeline.events.length <= eventCountBefore) {
+        _historyEnded = true;
+      }
+      _loadingHistory = false;
+      if (mounted) setState(() {});
+    }
+  }
+
   void updateView() {
     if (!mounted) return;
     setState(() {});
@@ -105,7 +139,12 @@ class _MuralChatViewState extends State<MuralChatView> {
 
   Future<void> _getTimeline() async {
     timeline?.cancelSubscriptions();
-    timeline = await room.getTimeline(onUpdate: updateView);
+    _loadingHistory = false;
+    _historyEnded = false;
+    timeline = await room.getTimeline(
+      onUpdate: updateView,
+      limit: Room.defaultHistoryCount * 3,
+    );
     if (!mounted) return;
     setState(() {});
   }
@@ -220,8 +259,12 @@ class _MuralChatViewState extends State<MuralChatView> {
       useSafeArea: true,
       isScrollControlled: true,
       backgroundColor: theme.colorScheme.surface,
-      builder: (context) => FractionallySizedBox(
-        heightFactor: 0.92,
+      builder: (context) => ConstrainedBox(
+        constraints: BoxConstraints(
+          maxHeight:
+              MediaQuery.viewInsetsOf(context).bottom +
+              (MediaQuery.sizeOf(context).height * 0.92),
+        ),
         child: _PostViewer(
           key: Key('post_viewer_${event.eventId}'),
           event: event,
@@ -294,6 +337,7 @@ class _MuralChatViewState extends State<MuralChatView> {
                     ),
                   )
                 : GridView.builder(
+                    controller: _scrollController,
                     padding: const EdgeInsets.all(2),
                     gridDelegate:
                         const SliverGridDelegateWithFixedCrossAxisCount(
@@ -301,8 +345,17 @@ class _MuralChatViewState extends State<MuralChatView> {
                           mainAxisSpacing: 2,
                           crossAxisSpacing: 2,
                         ),
-                    itemCount: events.length,
+                    itemCount: events.length + (_loadingHistory ? 1 : 0),
                     itemBuilder: (context, i) {
+                      if (i >= events.length) {
+                        return const Center(
+                          child: SizedBox(
+                            width: 20,
+                            height: 20,
+                            child: CircularProgressIndicator(strokeWidth: 2),
+                          ),
+                        );
+                      }
                       final event = events[i];
                       return _MediaCell(
                         event: event,
@@ -714,9 +767,8 @@ class _PostViewerState extends State<_PostViewer> {
   Future<void> _forwardPost() async {
     await showScaffoldDialog(
       context: context,
-      builder: (context) => ShareScaffoldDialog(
-        items: [ContentShareItem(event.content.copy())],
-      ),
+      builder: (context) =>
+          ShareScaffoldDialog(items: [ContentShareItem(event.content.copy())]),
     );
   }
 
@@ -780,9 +832,7 @@ class _PostViewerState extends State<_PostViewer> {
               e.relationshipEventId == event.eventId,
         )
         .toList();
-    allComments.sort(
-      (a, b) => a.originServerTs.compareTo(b.originServerTs),
-    );
+    allComments.sort((a, b) => a.originServerTs.compareTo(b.originServerTs));
 
     final nodeMap = <String, _CommentNode>{};
     final roots = <_CommentNode>[];
@@ -799,8 +849,7 @@ class _PostViewerState extends State<_PostViewer> {
           nodeMap.containsKey(current)) {
         if (!visited.add(current)) break;
         final node = nodeMap[current]!;
-        final parentId =
-            node.event.inReplyToEventId(includingFallback: false);
+        final parentId = node.event.inReplyToEventId(includingFallback: false);
         if (parentId == null ||
             parentId == event.eventId ||
             !nodeMap.containsKey(parentId)) {
@@ -1116,22 +1165,22 @@ class _PostViewerState extends State<_PostViewer> {
                       child: isVideo
                           ? EventVideoPlayer(event)
                           : hasImageDimensions
-                              ? AspectRatio(
-                                  aspectRatio: imgW / imgH,
-                                  child: MxcImage(
-                                    key: ValueKey(event.eventId),
-                                    event: event,
-                                    fit: BoxFit.cover,
-                                    isThumbnail: false,
-                                  ),
-                                )
-                              : MxcImage(
-                                  key: ValueKey(event.eventId),
-                                  event: event,
-                                  width: double.infinity,
-                                  fit: BoxFit.contain,
-                                  isThumbnail: false,
-                                ),
+                          ? AspectRatio(
+                              aspectRatio: imgW / imgH,
+                              child: MxcImage(
+                                key: ValueKey(event.eventId),
+                                event: event,
+                                fit: BoxFit.cover,
+                                isThumbnail: false,
+                              ),
+                            )
+                          : MxcImage(
+                              key: ValueKey(event.eventId),
+                              event: event,
+                              width: double.infinity,
+                              fit: BoxFit.contain,
+                              isThumbnail: false,
+                            ),
                     ),
                     Padding(
                       padding: const EdgeInsets.symmetric(horizontal: 4),
@@ -1226,20 +1275,21 @@ class _PostViewerState extends State<_PostViewer> {
                         ),
                       )
                     else
-                              ...commentTree.map((node) => _CommentTile(
-                            node: node,
-                            depth: 0,
-                            timeline: widget.timeline,
-                            currentUserId: widget.room.client.userID,
-                            onReply: (comment) => setState(
-                              () => _replyingTo = comment,
-                            ),
-                            onToggleReaction: _toggleCommentReaction,
-                            onShowReactionPicker: _showCommentReactionPicker,
-                            onOpenProfile: _openProfile,
-                            onDelete: _deleteComment,
-                            onReport: _reportComment,
-                          )),
+                      ...commentTree.map(
+                        (node) => _CommentTile(
+                          node: node,
+                          depth: 0,
+                          timeline: widget.timeline,
+                          currentUserId: widget.room.client.userID,
+                          onReply: (comment) =>
+                              setState(() => _replyingTo = comment),
+                          onToggleReaction: _toggleCommentReaction,
+                          onShowReactionPicker: _showCommentReactionPicker,
+                          onOpenProfile: _openProfile,
+                          onDelete: _deleteComment,
+                          onReport: _reportComment,
+                        ),
+                      ),
                   ],
                 ),
               ),
@@ -1458,8 +1508,7 @@ class _CommentTile extends StatelessWidget {
                           return Padding(
                             padding: const EdgeInsets.only(right: 4),
                             child: GestureDetector(
-                              onTap: () =>
-                                  onToggleReaction(comment, entry.key),
+                              onTap: () => onToggleReaction(comment, entry.key),
                               child: Container(
                                 padding: const EdgeInsets.symmetric(
                                   horizontal: 6,
@@ -1469,13 +1518,12 @@ class _CommentTile extends StatelessWidget {
                                   color: isMyReaction
                                       ? theme.colorScheme.primaryContainer
                                       : theme
-                                          .colorScheme
-                                          .surfaceContainerHighest,
+                                            .colorScheme
+                                            .surfaceContainerHighest,
                                   borderRadius: BorderRadius.circular(12),
                                   border: isMyReaction
                                       ? Border.all(
-                                          color:
-                                              theme.colorScheme.primary,
+                                          color: theme.colorScheme.primary,
                                           width: 1,
                                         )
                                       : null,
diff --git a/lib/utils/matrix_sdk_extensions/room_extension.dart b/lib/utils/matrix_sdk_extensions/room_extension.dart
index 6a7baa5..91e9d4e 100644
--- a/lib/utils/matrix_sdk_extensions/room_extension.dart
+++ b/lib/utils/matrix_sdk_extensions/room_extension.dart
@@ -12,6 +12,31 @@ import 'package:tatchat/config/app_config.dart';
 /// different accounts.
 const String roomTypeStateEvent = 'tatuchat.room_type';
 
+/// Leaves the room and removes it from the local database so that it does not
+/// reappear on the next sync or app restart.
+Future<void> safeLeave(Room room) async {
+  try {
+    await room.leave();
+  } on MatrixException catch (e, s) {
+    // If the room was already left on the server (e.g. a stale local copy
+    // reappeared after a restart) the leave request fails, but the user
+    // intent (room not being listed anymore) is already fulfilled. Clean up
+    // locally instead of showing an error.
+    if (!{
+      MatrixError.M_FORBIDDEN,
+      MatrixError.M_NOT_FOUND,
+      MatrixError.M_UNKNOWN,
+    }.contains(e.error)) {
+      Logs().w('Failed to leave room ${room.id}', e, s);
+      rethrow;
+    }
+    Logs().w('Room ${room.id} is already gone, cleaning up locally...', e, s);
+  }
+  final client = room.client;
+  await client.database.forgetRoom(room.id);
+  client.rooms.remove(room);
+}
+
 extension RoomTypeExtension on Room {
   String? get roomType =>
       getState(roomTypeStateEvent)?.content.tryGet<String>('type');
diff --git a/lib/widgets/chat_settings_popup_menu.dart b/lib/widgets/chat_settings_popup_menu.dart
index 08b29ab..acf8fce 100644
--- a/lib/widgets/chat_settings_popup_menu.dart
+++ b/lib/widgets/chat_settings_popup_menu.dart
@@ -6,6 +6,7 @@
 import 'dart:async';
 
 import 'package:tatchat/l10n/l10n.dart';
+import 'package:tatchat/utils/matrix_sdk_extensions/room_extension.dart';
 import 'package:tatchat/widgets/adaptive_dialogs/show_ok_cancel_alert_dialog.dart';
 import 'package:tatchat/widgets/future_loading_dialog.dart';
 import 'package:go_router/go_router.dart';
@@ -69,7 +70,7 @@ class ChatSettingsPopupMenuState extends State<ChatSettingsPopupMenu> {
                 if (!context.mounted) return;
                 final result = await showFutureLoadingDialog(
                   context: context,
-                  future: () => widget.room.leave(),
+                  future: () => safeLeave(widget.room),
                 );
                 if (result.error == null) {
                   router.go('/rooms');